and daly city 78 degrees. your extended forecast calls for cloudier conditions, a couple of degrees cooler on thursday. here comes the rain on friday. a pretty soggy weekend with the wettest weather coming in next monday into next tuesday. so the rain starts on friday. we'll be right back. ,,,,,,,,,, bean extract is the newest t craze. >>> pop one twice a day and you can lose weight without even trying. green coffee bean extract, the newest diet craze. >> dr. kim reports doctors are concerned about what you are really taking. >> a few months ago roberta lou went on facebook and saw an ad about a fat buster. >> if you can take two pills a day, you are in. >> reporter: online she found a ton of them for sale. >> so i clicked on it and i ordered it. >> reporter: without changing her diet or adding exercise. >> i lost my belly fat and ten pounds in two months without even trying. >> reporter: what is she taking? green coffee extract. green coffee extract comes from unroasted or green coffee beans. what is in them?